btrfs: use btrfs_fs_closing for background bg work

For both unused bg deletion and async balance work we'll happily run if
the fs is closing.  However I want to move these to their own worker
thread, and they can be long running jobs, so add a check to see if
we're closing and simply bail.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index e0375ba9d0fedf654023b41f9405502c8079ae5d..95d65c6bdf20437aa3f128157ab990b4e8707240 100644 (file)
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -1304,6 +1304,9 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info)
        if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags))
                return;
 
+       if (btrfs_fs_closing(fs_info))
+               return;
+
        /*
         * Long running balances can keep us blocked here for eternity, so
         * simply skip deletion if we're unable to get the mutex.
@@ -1543,6 +1546,9 @@ void btrfs_reclaim_bgs_work(struct work_struct *work)
        if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags))
                return;
 
+       if (btrfs_fs_closing(fs_info))
+               return;
+
        if (!btrfs_should_reclaim(fs_info))
                return;